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Michal Kvasnicka


63 total contributions since 2015

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Question


how can I effectively compute expected value by histogram approximation of probability desnsity function
What is the proper way to compute effectively (fast) the expected value E(x) in a case when I have approximation of probability ...

26 días ago | 1 answer | 0

1

answer

Question


symbolic function with specific properties
I need to implement the symbolic function E(m(x)), where x = [x1, ..., xN] are symbolic variables, with the folowing property: ...

27 días ago | 0 answers | 0

0

answers

Answered
Check if I have done everything right
Your riemann function is completely wrong! Try this: function [integral] = riemann(x) integral = sum(calc...

alrededor de 2 meses ago | 0

Answered
Randomly sorting rows while keeping column relationships the same
Apermrows = A(randperm(size(A,1)),:)

alrededor de 2 meses ago | 2

| accepted

Answered
running functions in multiple instances
You need to run three function on two matlab instances simultaneously? If yes, so open two separate instances of Matlab and run...

alrededor de 2 meses ago | 0

Answered
Does Matlab support GTX 1660 graphics card?
Definitely yes!!! Did you install the proper nvidia driver on your system?

alrededor de 2 meses ago | 0

| accepted

Question


ranking of vector with non-unique elements
I need to perform fast ranking of the vector with non-unique elements, like in the following example: F = [10.1 31.0 20.5 20.5 ...

2 meses ago | 1 answer | 0

1

answer

Question


vector of integers modification
I have vector of positive integers which I need to modify into vector of consecutive integers with the same ordering. Example: ...

2 meses ago | 1 answer | 0

1

answer

Question


vectorised code is terribly slower
Why is the vectorized version of simple local maxima detection code significantly slower (~2-3 times) than its for-loop version?...

2 meses ago | 0 answers | 0

0

answers

Question


ischange in stream or moving window regime
I would like to compute change points (or linearlly segmented signal) from input data stream via moving window. Is there any eff...

3 meses ago | 0 answers | 0

0

answers

Answered
Is I5 9400f processor is sufficient for deep learning, performing models,Monte Carlo simulation and other heavy works on Matlab
All MC methods are in general extremely CPU consuming. So, soon or later you always reach limits of your computer. From this poi...

4 meses ago | 1

| accepted

Answered
Replace elements in binary matrix
% B original binary matrix % B_ new binary matrix B_ = ~B;

5 meses ago | 0

| accepted

Question


specific assignments of vector items
I am looking for suitable algorithm to solve the following problem: For vector v (Nx1, double, single) I need to find assigment...

8 meses ago | 0 answers | 0

0

answers

Answered
elimination of conscutive regions (generalization: ones with zeros between)
I am still looking for better (faster) solution. Any idea how to improve so far best solution: A = [1 -1 0; ...

alrededor de 1 año ago | 1

Question


elimination of conscutive regions (generalization: ones with zeros between)
I need effectively eliminate (by zeroing) the consecutive "1's" between "-1's" and start/end of column at each column of matrix ...

alrededor de 1 año ago | 3 answers | 0

3

answers

Answered
elimination of consecutive regions
good idea (only 1D) is <https://www.mathworks.com/matlabcentral/answers/293926-how-do-i-find-4-or-more-consecutive-zeros-and-rep...

alrededor de 1 año ago | 0

Question


elimination of consecutive regions
I need to effectively eliminate consecutive regions in vector "a" or better in rows/columns of matrix "A" with length of separat...

alrededor de 1 año ago | 3 answers | 0

3

answers

Question


how to robustly estimate low and up envelope of signal with trend, few level constant steps and noise
I am looking for robust estimation method of low and up envelope of the signal consisting from smooth trend component, constant ...

alrededor de 1 año ago | 0 answers | 0

0

answers

Question


different speed of ODE benchmark with and without MATLAB gui
When I ran matlab benchmark on Linux at MATLAB GUI and at MATLAB command line (without gui) I get the different speed of ODE ben...

más de 1 año ago | 0 answers | 0

0

answers

Answered
Incompatible gcc version with mex
Frankly speaking I do not understand why TMW choose the "compatible" compiler version on Linux so terribly. On many distribution...

más de 1 año ago | 0

Submitted


Fast unique random permutations
Fast random sample (without replacement) from unique permutations of an integer vector

más de 1 año ago | 0 downloads |

Question


add limit lines to the gplotmatrix figure
How to add to each subplot of gplotmatrix figure (gplotmatrix(x,[],group)) four separate lines corresponding to the two limits v...

más de 1 año ago | 0 answers | 0

0

answers

Answered
find indices of row subsets
So far best solution: function ind = item2ind_new(item,t) t = t(:); [m,n] = size(item); mct = max(accumarray(t,1))...

más de 1 año ago | 0

| accepted

Question


find indices of row subsets
I am trying to find vectorized matlab function ind = item2ind(item,t) to solve following problem: I have a list of row vectors ...

más de 1 año ago | 3 answers | 0

3

answers

Question


speedup dsearchn for large data set
I am looking for significant speed up of dsearchn function in a case of large input data k = dsearchn(X,XI) where is no...

más de 1 año ago | 1 answer | 0

1

answer

Answered
How can i find the equation of a fitted curve line in the curve fitting tool?
Your problem is already solved. When you are able to plot regression line you must know parameters k and q of line equation y = ...

casi 2 años ago | 0

Answered
integer strings decoding ... speed optimization
Probably fastest and simplest solution, I found so far ... using latest new Matlab (>= R2016b) features, see function insertBefo...

alrededor de 2 años ago | 0

| accepted

Answered
How to find water vapour density for gaspl
Just try simple googling with the following keywords: water, wapour, density, table I hope you smart enough to find something...

alrededor de 2 años ago | 0

Answered
Error in implemented function
The double precision (default numerical values class in Matlab) is not enough for this kind of computation!!! You need to use s...

alrededor de 2 años ago | 2

| accepted

Answered
Function calculates wrong value
See ma answer here: <https://www.mathworks.com/matlabcentral/answers/366977-error-in-implemented-function link>

alrededor de 2 años ago | 0

| accepted

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